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Rockwood Estates Mutual Water Company

EPA monitoring tested this supplier for 81 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

81
contaminants tested
12
detected
30
people served
0
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Local government
Counties served
Santa Clara

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

0
health-based violations
2
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 4/4 LCR 2023
Fluoride
490 µg/L 12%
of the EPA limit 4000 µg/L
 3/4 SYR4 2017
Gross Beta Particle Activity
1.4 pCi/L
No EPA limit set
 2/3 SYR4 2018
Toluene
9.5 µg/L 1%
of the EPA limit 1000 µg/L
 2/7 SYR4 2017–2019
Asbestos
370 MFL 5286%
of the EPA limit, in the worst sample — 7 MFL
 1/4 SYR4 2017
Barium
210 µg/L 11%
of the EPA limit 2000 µg/L
 1/4 SYR4 2017
Bromodichloromethane
2.2 µg/L
No EPA limit set
 1/2 SYR4 2017
Bromoform
1.1 µg/L
No EPA limit set
 1/2 SYR4 2017
Chloroform
7.4 µg/L
No EPA limit set
 1/2 SYR4 2017
Chromium
11 µg/L 11%
of the EPA limit 100 µg/L
 1/4 SYR4 2017
Dibromochloromethane
2 µg/L
No EPA limit set
 1/2 SYR4 2017
TTHM
13 µg/L 16%
of the EPA limit 80 µg/L
 1/2 SYR4 2017
69 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitrateNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WOLFSON, MELANIE
Phone
408-396-4560
Email
remwc@rwhmh.com

Frequently asked questions about Rockwood Estates Mutual Water Company

Is Rockwood Estates Mutual Water Company tap water safe to drink?

EPA monitoring detected 12 contaminants in Rockwood Estates Mutual Water Company's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Rockwood Estates Mutual Water Company's water?

EPA monitoring detected Lead, Fluoride, Gross Beta Particle Activity, Toluene, Asbestos, and others. The full list with the level and data source for each is above.

How many people does Rockwood Estates Mutual Water Company serve?

Rockwood Estates Mutual Water Company reports serving 30 people in California, per its EPA record.

Has Rockwood Estates Mutual Water Company had any water quality violations?

The EPA has 2 violations on file for Rockwood Estates Mutual Water Company, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.